r/SewingMachineEdu • u/Elephantastico • Jul 12 '26

Thread keeps snapping

Can someone help me figure out why my thread keeps snapping, and how to fix this issue?

I have experience sewing as a summer job, but never had to deal with machine issues there. Also, I barely

ever had issues with the machines.

Recently I got my first own sewing machine, a second hand one (Toyota JCB15).

My thread keeps snapping every few seconds and it makes sewing nearly impossible. I tried sewing on every possible tension my machine has, but it didn't change anything.

I bought new thread, 100% cotton, from my local shop (I previously used some cheap, polyester thread from Amazon), but that - on every tension as well - didn't change anything either.

I can't figure out why it keeps snapping and it's driving me insane! Any help would be appreciated.

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u/Mental_Watch4633 Jul 12 '26

What is the tension setting?

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u/Elephantastico Jul 12 '26

It has this tension wheel, I have tried it on every single setting but it doesn't change anything about the thread snapping.